Histamine is a naturally occurring chemical that plays an important role in immune responses, digestion, and the nervous system. Produced by mast cells in your body, histamine helps fight infections ...

Histamine is a chemical the immune system releases in response to allergens, triggering an allergic reaction. Many foods also contain histamine, which is broken down by an enzyme in the gut. Some ...

If you've ever eaten certain foods and suddenly experienced headaches, hives, stomach cramps, or a racing heart, the culprit may not always be an allergy, it could be histamine intolerance. While ...